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<li class="navelem"><a class="el" href="dir_885cc87fac2d91e269af0a5a959fa5f6.html">E:</a></li><li class="navelem"><a class="el" href="dir_1156a89e522bba50a2971fe896a0c15e.html">!代码工厂</a></li><li class="navelem"><a class="el" href="dir_64066445c3883bf8de1933e8bad1a394.html">3D引擎</a></li>  </ul>
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<div class="title">engine_terrain.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor">#include &quot;engine_base.h&quot;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &quot;engine_fvf.h&quot;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &quot;engine_color.h&quot;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &quot;bound.h&quot;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">//---------------------------------</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// 数据结构区</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"><a class="code" href="struct_terrain.html">   15</a></span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a> </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;{</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;        <a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>(){}</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="struct_terrain.html#aa77e28b4a4fb77f10378a6b1443f28ff">   33</a></span>&#160;        <a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>(<span class="keywordtype">int</span> _NumRow,<span class="keywordtype">int</span> _NumCol,<span class="keywordtype">float</span> scaleY,<span class="keywordtype">float</span> cell_size, </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;                <span class="keywordtype">float</span> HeightOffset =0)</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        {</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;                init(_NumRow, _NumCol, scaleY, cell_size, HeightOffset);        </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        }</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <span class="keywordtype">void</span> init(<span class="keywordtype">int</span> _NumRow,<span class="keywordtype">int</span> _NumCol,<span class="keywordtype">float</span> scale,<span class="keywordtype">float</span> cell_size,</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;                <span class="keywordtype">float</span> HeightOffset)</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        {</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;                NumRow =_NumRow;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;                NumCol =_NumCol;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;                        </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;                NumCellRow =NumRow-1;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;                NumCellCol =NumCol-1;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;                cell_space =cell_size;  <span class="comment">// 只是换个名称</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;                num_vertex_per_row =NumCol;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                num_vertex_per_col =NumRow;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;                </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;                num_cell_per_row =num_vertex_per_row - 1;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;                num_cell_per_col =num_vertex_per_col - 1;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;                </div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;                width =num_cell_per_row * cell_space;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;                depth =num_cell_per_col * cell_space;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;                height_scale =scale;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;                num_triangle = num_cell_per_row * num_cell_per_col *2;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;                num_vertex = num_vertex_per_row * num_vertex_per_col;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;                Height_Offset =HeightOffset;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        }</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">//这一块写的不好，有些绕人了。可以忽略用最下面的一块。</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keywordtype">int</span> num_vertex_per_row; <span class="comment">//顶点列数</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordtype">int</span> num_vertex_per_col; <span class="comment">//顶点行数</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <span class="keywordtype">int</span> num_cell_per_row; <span class="comment">// 单元行数</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="keywordtype">int</span> num_cell_per_col; <span class="comment">// 单元列数</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="keywordtype">float</span> width, depth;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="keywordtype">float</span> height_scale, cell_space;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keywordtype">int</span>  num_triangle, num_vertex;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keywordtype">int</span> NumRow; <span class="comment">//顶点行数 </span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keywordtype">int</span>     NumCol; <span class="comment">//顶点列数</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="keywordtype">int</span> NumCellRow; <span class="comment">//单元行数</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keywordtype">int</span> NumCellCol; <span class="comment">//单元列数</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="keywordtype">float</span> Height_Offset; <span class="comment">// 高度偏移量</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;}<a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="struct_sub_mesh_and_box.html">   87</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_sub_mesh_and_box.html" title="子网格和包围框。">SubMeshAndBox</a></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;{</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        ID3DXMesh* mesh;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <a class="code" href="structs_bound_box.html">sBoundBox</a> box;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <span class="comment">// For sorting.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keywordtype">bool</span> operator&lt;(<span class="keyword">const</span> <a class="code" href="struct_sub_mesh_and_box.html" title="子网格和包围框。">SubMeshAndBox</a>&amp; rhs)<span class="keyword">const</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;};</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">//_NumRow, _NumCol, scaleY, cell_size, HeightOffset</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="keyword">const</span> <a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a> g_sTerrain(257,257,0.5, 2, 0);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">//-----------------------------------------------------</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">//函数区</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">// 初始化地形</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;UINT*   init_terrain(IDirect3DDevice9* pDevice, <span class="comment">//[in]</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;                                         <span class="keywordtype">char</span>*  file_name,</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                                         <a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; terrain_map,          <span class="comment">//[in,out]</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                                         IDirect3DIndexBuffer9** vertexIndexBuff,       <span class="comment">//[in,out] </span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                                         IDirect3DVertexBuffer9** vertexBuff ,          <span class="comment">//[in,out]</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                                         IDirect3DTexture9**    tex);           <span class="comment">//[in,out]</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment">// 读取高度图</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;UCHAR*  terrain_read_heightmap(TCHAR* file_name,<span class="keywordtype">int</span> num_terrain_vertex);</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment">// 得到高度图数据</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="keywordtype">int</span>             terrain_get_heightmap_value(<a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; map1,UINT* heightmap,<span class="keywordtype">int</span> i,<span class="keywordtype">int</span> j);</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">// 设置高度图数据</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keywordtype">void</span>    terrain_set_heightmap_value(<a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; map1,UINT* heightmap,<span class="keywordtype">int</span> i,<span class="keywordtype">int</span> j,<span class="keywordtype">int</span> value);</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">// 过程化计算光照</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keywordtype">float</span>   terrain_compute_vertex_light(<a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; map1,UINT* heightmap,<span class="keywordtype">int</span> i,<span class="keywordtype">int</span> j,D3DXVECTOR3 direction_light);</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">// 生成顶点缓冲索引</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="keywordtype">void</span>    terrain_init_vertex_index(IDirect3DDevice9* pDevice, IDirect3DIndexBuffer9** ib, <a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; map1);</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">// 给出x,z.得出高度</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="keywordtype">float</span>   terrain_get_height(<a class="code" href="struct_terrain.html" title="地形配置,来主导生成地形。">Terrain</a>&amp; map1, UINT* heightmap, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> z);</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
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